Two-way front cover expansion sleeve clamp

Abstract

This utility model discloses a bidirectional front cover expansion sleeve clamp, belonging to the field of tooling and fixture technology. It includes a fixed base, a positioning base fixedly installed on one side of the middle of the fixed base, a first through hole in the middle of the positioning base, a pull rod movably disposed within the first through hole, and a cylinder connected to the end of the pull rod away from the positioning base. A mounting post protrudes from the side of the positioning base away from the fixed base, and a tensioning sleeve is fitted over the outside of the mounting post. The tensioning sleeve is fixedly connected to the other end of the pull rod. An installation groove is provided on the positioning base and is located on the outer periphery of the mounting post. This utility model uses the cylinder to push the pull rod, causing the tensioning sleeve to move away from the mounting post until the tensioning sleeve is released. The workpiece is then placed into the installation groove, and the cylinder pulls in the other direction, causing the pull rod to move accordingly. The tensioning sleeve is then re-fitted onto the outside of the mounting post, expanding and clamping the workpiece. This reduces manual labor, saves labor costs, and improves the clamping efficiency of the workpiece.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixture technology, and more specifically, relates to a bidirectional front cover expansion sleeve clamp. Background Technology

[0002] In daily life, fixtures play a vital role in the manufacturing process. Their purpose is to accurately fix the workpiece so as to more stably ensure the machining accuracy of the parts, reduce machining time, lower enterprise production costs, and improve production efficiency.

[0003] Currently, most fixtures are manually assisted. First, the workpiece is placed on the fixture, and then the position of the clamping arms is adjusted so that the clamping arms hold the outer periphery of the workpiece, thereby achieving the function of clamping the workpiece. However, this manual assisted fixing method is inefficient and may result in unstable fixing. Utility Model Content

[0004] The main objective of this invention is to provide a bidirectional front cover expansion sleeve clamp to solve the problems mentioned above in the background technology.

[0005] According to a first aspect of the present invention, a bidirectional front cover expansion sleeve clamp is provided, including a fixed base, a positioning base fixedly installed on one side of the middle portion of the fixed base, a first through hole opened in the middle portion of the positioning base, a pull rod movably disposed in the first through hole, a cylinder connected to the end of the pull rod away from the positioning base, a mounting post protruding on the side of the positioning base away from the fixed base, a tension sleeve sleeved on the outside of the mounting post, the tension sleeve being fixedly connected to the other end of the pull rod, and a mounting groove provided on the positioning base, the mounting groove being disposed on the outer periphery of the mounting post.

[0006] In a specific embodiment of this utility model, a stop block is provided at one end of the pull rod near the mounting post, and the outer diameter of the stop block is larger than the diameter of the first through hole.

[0007] In a specific embodiment of this utility model, a first assembly hole is provided at one end of the pull rod near the mounting column, and a second assembly hole is provided on the tensioning sleeve. The first assembly hole and the second assembly hole are fixedly connected by a locking bolt.

[0008] In a specific embodiment of this utility model, a limiting groove is provided on the mounting column, and the locking bolt is movably disposed within the limiting groove.

[0009] In a specific embodiment of this utility model, the mounting column includes a first frustum section, a second cylindrical section, and a third frustum section. The first frustum section is provided with a first small outer diameter end and a first large outer diameter end. The third frustum section is provided with a third small outer diameter end and a third large outer diameter end. The outer diameter of the third large outer diameter end is larger than the outer diameter of the first large outer diameter end. The two ends of the second cylindrical section are respectively connected to the first large outer diameter end and the third small outer diameter end.

[0010] In a specific embodiment of this utility model, the middle part of the fixing base is provided with a through hole that communicates with the first through hole.

[0011] In a specific embodiment of this utility model, a positioning post protrudes from the side of the positioning seat near the fixed seat, and the positioning post is inserted into the through hole.

[0012] In a specific embodiment of this utility model, a pad is fixedly installed on the side of the positioning seat near the mounting column. The outer diameter of the pad is smaller than the outer diameter of the positioning seat. A connection hole is provided on the positioning seat, and the pad covers the connection hole.

[0013] In a specific embodiment of this utility model, the end of the pull rod away from the mounting post is connected to a connecting sleeve, and the connecting sleeve has a second through hole, through which the telescopic end of the cylinder can pass and contact one end of the pull rod.

[0014] In a specific embodiment of this utility model, the outer wall of the tensioning sleeve is provided with uniformly distributed straight grooves to make the tensioning sleeve elastic.

[0015] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0016] This bidirectional front cover expansion sleeve clamp uses a cylinder to push a pull rod, causing the expansion sleeve to move away from the mounting post until the expansion sleeve is released. The workpiece is then placed into the mounting groove, and the cylinder is pulled in the other direction. The pull rod moves accordingly, and the expansion sleeve is re-attached to the outside of the mounting post. The expansion sleeve expands and clamps the workpiece, reducing manual labor, saving labor costs, and improving the clamp's workpiece fixing efficiency. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the structure of a bidirectional front cover expansion sleeve clamp in one embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of a bidirectional front cover expansion sleeve clamp in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the positioning seat in one embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the positioning seat in one embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the tensioning sleeve in one embodiment of the present invention. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that can communicate with each other; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements, an indirect connection, or an interaction between two elements.

[0028] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0029] Reference Figures 1 to 5 As shown, a bidirectional front cover expansion sleeve clamp is provided, including a fixed base 1. A positioning base 2 is fixedly installed on one side of the middle of the fixed base 1. A first through hole 21 is opened in the middle of the positioning base 2. A pull rod 3 is movably arranged in the first through hole 21. A cylinder is connected to the end of the pull rod 3 away from the positioning base 2. A mounting post 22 protrudes on the side of the positioning base 2 away from the fixed base 1. A tension sleeve 4 is sleeved on the outside of the mounting post 22. The tension sleeve 4 is fixedly connected to the other end of the pull rod 3. A mounting groove 23 is provided on the positioning base 2. The mounting groove 23 is located on the outer periphery of the mounting post 22.

[0030] In this embodiment, the cylinder pushes the pull rod 3 to move the tension sleeve 4 away from the mounting post 22 until the tension sleeve 4 is released. The workpiece is then placed into the mounting groove 23. The cylinder pulls in the other direction, and the pull rod 3 moves accordingly. The tension sleeve 4 is then re-fitted onto the outside of the mounting post 22, and the tension sleeve 4 expands to clamp the workpiece. This reduces manual labor, saves labor costs, and improves the fixture's efficiency in fixing the workpiece.

[0031] In one embodiment of this utility model, a stop block 31 is provided at one end of the pull rod 3 near the mounting post 22. The outer diameter of the stop block 31 is larger than the diameter of the first through hole 21. When the pull rod 3 approaches the mounting post 22, the stop block 31 will abut against one end of the mounting post 22, and the tension sleeve 4 will not burst due to over-pulling.

[0032] In one embodiment of this utility model, a first mounting hole 32 is provided at one end of the pull rod 3 near the mounting post 22, and a second mounting hole 41 is provided on the tension sleeve 4. The first mounting hole 32 and the second mounting hole 41 are fixedly connected by a locking bolt.

[0033] Furthermore, a limiting groove 221 is provided on the mounting column 22, and the locking bolt is movably disposed within the limiting groove 221.

[0034] In this embodiment, the pull rod 3 and the tension sleeve 4 are fixedly connected by a locking bolt. When the pull rod 3 moves, it drives the tension sleeve 4 to move accordingly. The locking bolt is horizontally set in the limiting groove 221. The locking bolt abuts against the bottom of the limiting groove 221, which also prevents the tension sleeve 4 from being pulled down further, causing it to burst open.

[0035] In one embodiment of this utility model, the mounting column 22 includes a first frustum section 222, a second cylindrical section 223, and a third frustum section 224. The first frustum section 222 is provided with a first small outer diameter end and a first large outer diameter end, and the third frustum section 224 is provided with a third small outer diameter end and a third large outer diameter end. The outer diameter of the third large outer diameter end is larger than the outer diameter of the first large outer diameter end. The two ends of the second cylindrical section 223 are respectively connected to the first large outer diameter end and the third small outer diameter end. The more the pull rod 3 moves towards the mounting column 22, the more the tensioning sleeve 4 expands, thereby locking the workpiece.

[0036] In one embodiment of this utility model, the middle part of the fixing base 1 is provided with a through hole 11 that communicates with the first through hole 21.

[0037] Furthermore, a positioning post 25 protrudes from the side of the positioning base 2 near the fixed base 1. The positioning post 25 is inserted into the through hole 11, which facilitates user assembly. At the same time, the length of the positioning post 25 is less than the length of the mounting post 22, which makes it easy to identify.

[0038] In one embodiment of this utility model, a pad 5 is fixedly installed on the side of the positioning seat 2 near the mounting column 22. The outer diameter of the pad 5 is smaller than the outer diameter of the positioning seat 2. A connecting hole 24 is provided on the positioning seat 2. The pad 5 covers the connecting hole 24. The pad 5 can be replaced with different sizes according to the size of the workpiece in order to better fix the workpiece. The pad 5 and the positioning seat 2 are fixedly connected by bolts, which can prevent the positioning seat 2 from loosening.

[0039] In one embodiment of this utility model, a connecting sleeve 6 is connected to the end of the pull rod 3 away from the mounting post 22. The connecting sleeve 6 has a second through hole 61. The telescopic end of the cylinder can pass through the second through hole 61 and contact one end of the pull rod 3. The telescopic end of the cylinder is movably disposed in the second through hole 61. When the telescopic end of the cylinder pushes one end of the pull rod 3 forward, the tension sleeve 4 is released. When the telescopic end of the cylinder pulls backward, the tension sleeve 4 expands and clamps the workpiece. The tension sleeve 4 can be replaced to adapt to products of different thicknesses and sizes.

[0040] In one embodiment of this utility model, the outer wall of the tensioning sleeve 4 is provided with uniformly distributed straight grooves 42 so that the tensioning sleeve 4 has elasticity. While not affecting the overall strength, the tensioning sleeve 4 has a certain ability to finely adjust deformation, thereby clamping the workpiece.

[0041] In one embodiment of this utility model, the fixing base 1 has several mounting holes to facilitate the fixing and installation of the fixing base 1.

[0042] In one embodiment of this utility model, the end of the pull rod 3 near the mounting post 22 is symmetrically provided with notches for easy removal and placement.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A two-way front cover expansion sleeve clamp comprising a fixed base (1), characterized in that, A positioning seat (2) is fixedly installed on one side of the middle part of the fixed seat (1). A first through hole (21) is opened in the middle of the positioning seat (2). A pull rod (3) is movably arranged in the first through hole (21). A cylinder is connected to the end of the pull rod (3) away from the positioning seat (2). A mounting post (22) protrudes on the side of the positioning seat (2) away from the fixed seat (1). A tension sleeve (4) is sleeved on the outside of the mounting post (22). The tension sleeve (4) is fixedly connected to the other end of the pull rod (3). An installation groove (23) is provided on the positioning seat (2). The installation groove (23) is located on the outer periphery of the mounting post (22).

2. The bidirectional front cover boot fixture of claim 1, wherein, The pull rod (3) is provided with a stop block (31) at one end near the mounting post (22), and the outer diameter of the stop block (31) is larger than the diameter of the first through hole (21).

3. The bidirectional front cover boot fixture of claim 1, wherein, The tie rod (3) has a first assembly hole (32) at one end near the mounting post (22), and the tension sleeve (4) has a second assembly hole (41). The first assembly hole (32) and the second assembly hole (41) are fixedly connected by a locking bolt.

4. The bidirectional front cover boot fixture of claim 3, wherein, The mounting post (22) is provided with a limiting groove (221), and the locking bolt is movably disposed in the limiting groove (221).

5. The bidirectional front cover boot fixture of claim 1, wherein, The mounting post (22) includes a first frustum section (222), a second cylindrical section (223), and a third frustum section (224). The first frustum section (222) is provided with a first small outer diameter end and a first large outer diameter end. The third frustum section (224) is provided with a third small outer diameter end and a third large outer diameter end. The outer diameter of the third large outer diameter end is larger than the outer diameter of the first large outer diameter end. The two ends of the second cylindrical section (223) are respectively connected to the first large outer diameter end and the third small outer diameter end.

6. The bidirectional front cover boot fixture of claim 1, wherein, The fixing base (1) has a through hole (11) in the middle that communicates with the first through hole (21).

7. The bidirectional front cover boot fixture of claim 6, wherein, The positioning seat (2) has a protruding positioning post (25) on the side near the fixed seat (1), and the positioning post (25) is inserted into the through hole (11).

8. The bidirectional front cover expansion sleeve clamp according to claim 1, characterized in that, A pad (5) is fixedly installed on the side of the positioning seat (2) near the mounting column (22). The outer diameter of the pad (5) is smaller than the outer diameter of the positioning seat (2). A connection hole (24) is provided on the positioning seat (2), and the pad (5) covers the connection hole (24).

9. The bidirectional front cover boot fixture of claim 1, wherein, The end of the pull rod (3) away from the mounting post (22) is connected to a connecting sleeve (6). The connecting sleeve (6) has a second through hole (61). The telescopic end of the cylinder can pass through the second through hole (61) and contact one end of the pull rod (3).

10. The bidirectional front cover boot fixture of claim 1, wherein, The outer wall of the tensioning sleeve (4) is provided with uniformly distributed straight grooves (42) so that the tensioning sleeve (4) has elasticity.

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